Ransomware attack on health giant Ascension hits 5.6 million patients

A May ransomware attack attributed to the Black Basta gang against Ascension — a large U.S. healthcare system — resulted in theft of sensitive medical records, payment information, and identity documents for about 5.6 million patients and caused significant operational disruptions (delayed/lost lab results, medication errors); the incident is reported as the third-largest healthcare-related breach of 2024.